The usefulness of two-dimensional echocardiography to measure the right ventricular volume was assessed in 58 normal children (mean age 5 years and 3 months). From the apical 4-chamber view (A4CV), the subcostal RV sagittal view (SCRVSV), the subcostal right anterior oblique view (SCRAOV), and the subcostal RV coronal view (SCRVCV), the dimensions and areas of the right ventricle were measured. The right ventricular volumes and ejection fractions were calculated from these data by pyramid model and single plane area/length method. We could obtain subcostal right ventricular sagittal view in 98%, apical 4-chamber view in 90%, subcostal right anterior oblique view in 79%, and subcostal right ventricular coronal view in 71% of our children. The areas and dimensions correlated with all growth indices, such as age, height, weight, and body surface area. In general the areas showed higher correlation with body surface area, and dimensions with height. correlations of parameters obtained from the subcostal right anterior oblique view and subcostal right ventricular sagittal view with the growth indices were better than those of the subcostal right ventricular coronal view. The calculated right ventricular volume and ejection fraction showed a great varibility depending on the model used. The right ventricular volume calculated by pyramid model correlated better with the growth indices than that by single plane area/length method. the right ventricular volume calculated from the apical 4-chamber view dimension and the subcostal right ventricular sagittal view area by pyramid model is the model which showed the best correlation with growth indices. Right ventricular ejection fraction did not change with any growth indices. Among the right ventricular volumes and ejection fractions by single plane area/length method, the volume(59.9+/-29.9 ml/m(2)) and ejection fracton (58.7+/-10.9%) from the subcostal right anterior oblique view were similar to those (51.0+/-17.3ml/m(2), 51.3+/-10.2%) calculated from the apical 4-chamber view dimension and the subcostal right ventricular sagittal view area by pyramid model. The subcostal right anterior oblique view reflects three parts of the right ventricle. Its area and dimension are well correlated with growth indices. Also the right ventricular volume and ejection fraction obtained by single plane area/length method using the subcostal right anterior oblique view correlate with the growth indices. Therefore the subcostal right anterior oblique view is the most valuable single view representing the right ventricle.
Body Surface Area ; Child* ; Echocardiography* ; Heart Ventricles ; Humans ; Stroke Volume

No abstract availble

No abstract available.
Contracture* ; Mastectomy* ; Seroma*

No abstract available.
Angiography ; Coronary Angiography* ; Coronary Vessels ; Echocardiography* ; Mucocutaneous Lymph Node Syndrome*

No abstract available.
Echocardiography* ; Echocardiography, Doppler, Color ; Ligation*

No abstract available.
Child ; Coronary Vessels* ; Echocardiography ; Humans

No abstract available.
Child ; Humans

No abstract available.
Angiofibroma*

PURPOSE: To evaluate the efficacy of combined treatment of metallic biliary stent placement and radiotherapy in malignant biliary obstruction. MATERIALS AND METHODS: Between January 1992 and February 1994, 22 patients with malignant biliary obstruction were treated with metallic biliary stent placement and radiotherapy. The causes of the obstruction included cholangiocarcinoma(n=14), gallbladder carcinoma(n=4), colon cancer(n=2), pancreatic head cancer (n=1), and stomach cancer(n=1). According to the sites of obstruction level, patient were divided into 2 groups; hilar obstruction(n=18) and common bile duct obstruction(n=4). The patients received dose of 45 Gray/18 fraction by external radiotherapy and 20Gy/8f by high dose rate brachytherapy with iridium--192 source through percutaneous transhepatic biliary drainage(PTBD) catheter. The duration of stent patency after placement, survival period and survival rate by Kaplan Meier method were calculated in dead and alive patients, respectively. RESULTS: In all 22 patients, the duration of stent patency was 5.5(1.3--18.5)months. Survival periods after stent placement and PTBD were 5.3(2.0--8.5 )months and 7.9(4.0--14.7)months respectively in 9 dead patients and 7.7(1.3--21.0)months and 9.5(2.3--23.0)months in 13 alive patients. In all 22 patients, the survival rates in 6, 12 and 18 months were 78.9%, 47.5 % and 35.6 %, respectively. CONCLUSIONS: The results with combined metallic biliary stent placement and radiotherapy for the palliative treatment of malignant biliary obstruction in this study was more favorable, as compared with those of the other authors with only metallic biliary stent placement.
Brachytherapy ; Catheters ; Colon ; Common Bile Duct ; Gallbladder ; Head and Neck Neoplasms ; Humans ; Palliative Care ; Radiotherapy* ; Stents* ; Stomach ; Survival Rate

The ureteropelvic junction is one of the most common site of obstruction in the upper urinary tract, though the etiology is still unclear. In the present study, a quantitative histological analysis of the ureteropelvic junction(UPJ) obstruction was performed on 23 patient specimens(10 children, 13 adults) and 14 normal control specimens(6 children, 8 adults). Color image analysis system was employed to examine and compare collagen and smooth muscle components of the lamina muscularis layer. Tissue matrix ratio, that is collagen-to-smooth muscle ratio, was calculated using Bio Scan OPTIMAS Ver 4.02. Relative ratio of lamina propria and lamina muscularis to UPJ was calculated as percentage provided by "Img Pro" computer program. The results showed an increased tissue matrix ratio of 0.68+/-0.42 in the child patient group compared with the value of 0.30+/-0.10 in the child control group(p<0.05), also the increased tissue matrix ratio of 1.45+/-1.67 in the adult patient group compared to 0.48+/-0.25 in the adult control group(p<0.05). But relative ratio of the lamina propria and lamina muscularis to UPJ was not statistically significant for each group(p>0.05). Our findings emphasize a significant increase in the tissue matrix ration(collagen-to-smooth muscle ratio) of the UPJ obstruction.
Adult ; Child ; Collagen ; Humans ; Mucous Membrane ; Muscle, Smooth ; Urinary Tract